调QNd:YAG倍频激光器的测深模拟实验研究

SIMULATED BATHYMETRY EXPERIMENTAL RESEARCH OF Q-SWITCHED D0UBLE FREQUENCY Nd: YAG LASER

本文报道了利用Nd：YAG激光器产生的1．064μm的红外激光脉冲和二次谐波倍频后的532um的激光脉冲进行水深测量的模拟实验研究．实验通过探测水面的红外回波及水下的反射回波信号来实现水深的探测．文章介绍了实验原理和实验过程，并对实验结果进行了分析和讨论．

In this paper,A experiment is discussed,in which a Q-switched double frequency Nd: YAGlaser is used f0r sounding the depth 0f water. The laser has emitted at 532nm and l064nm with a pulselength of approximately 5 ns. IR beam at 1064nm is high attenuation in the water,which prevents thebeam from penbtrating more than a few centimeters- The IR beam is used to measure the slant range tothe water surface. The green beam at 532nm isused for detecting the target under water. Thetheoretical model,the experiment set-up and results are described in detail.